Rotor and gyrocopter with said rotor

Details Rotor and gyrocopter with said rotor Rotor and gyrocopter with said rotor

2007-10-02

2007-10-02

Edgar, Richard A. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Nonmetallic resilient mounting

C416S24400R

Reexamination Certificate

active

10552320

ABSTRACT:
A rotor, comprising at least one rotor blade connectable to a rotor head, which rotor blade possesses a blade neck having a virtual flapping hinge in the form of a flexurally soft, flexurally elastic blade-neck portion, there being provided, in a blade-connector region of the blade neck, two auxiliary flapping hinges, spaced apart from one another in the radial longitudinal direction of the rotor blade with reference to a rotor radius, between which the virtual flapping hinge is substantially disposed and between which the blade neck is deformable in flexurally elastic and curved fashion in the context of a flapwise motion. A rotorcraft, in particular a helicopter, in particular a tiltrotor helicopter, having at least one such rotor.

REFERENCES:
patent: 3874815 (1975-04-01), Baskin
patent: 4093400 (1978-06-01), Rybicki
patent: 4299538 (1981-11-01), Ferris et al.
patent: 4307996 (1981-12-01), Watson
patent: 4344739 (1982-08-01), Derschmidt et al.
patent: 4381902 (1983-05-01), Head et al.
patent: 4650401 (1987-03-01), Yao et al.
patent: 0 521 792 (1993-01-01), None
International Search Report for PCT/EP2004/003643 (3 pages).

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